Final answer:
A landing and a railing should be installed in the middle of the stairs to provide a resting place and support for individuals using the stairs. Hence the correct answer is option A
Step-by-step explanation:
In the middle of the stairs, a landing should be installed. A landing is a platform between flights of stairs that provides a resting place for people as they ascend or descend the stairs. It helps break up a long flight of stairs and provides a safe and stable area to rest or change direction. It also ensures that the staircase meets building codes and safety regulations.
In addition to a landing, it is important to have a railing installed on the stairs. A railing is a barrier that runs along the side of the stairs to provide support, stability, and safety for individuals using the stairs. It helps prevent falls and provides something to hold onto while navigating the stairs.
A window is not typically installed in the middle of the stairs. Windows are typically installed in walls to provide natural light and ventilation to a room, not in the middle of a staircase.
Hence the correct answer is option A